Seal-press.



No. 69I,079. Patented Jam-l4, I902.

A. B. SCHOFIELD.

SEAL PRESS.

(Application filed July 13, 1901.)

(No Model.)

ll lll/ g W p 6 UNrTn STATES ATENT OFFICE.

ALBERT B. SOHOFIELD, OF BROOKLYN, NEW YORK, ASSIGNORTO KEYSTONE SE-AL & PRESS COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

SEAL-PRESS.

SPECIFICATION formingpart of Letters Patent N 0. 691,079, dated January. 14, 1902. Application filed July 13, 1901. Serial No. 68,140. (No model.)

To ctZZ whom it may concern.-

' Be it known that I, ALBERT B. SCHOFIELD, a citizen of the United States, and a resident of the borough of Brooklyn, in the city and State of New York, have invented a new and useful SeaLPi ess, of which the following is a specification.

My invention relates to a seal-press, and more particularly to a seal-press intended to be operated by the hand for spreading the end of a soft-metal rivet and forming thereon a letter or symbol, one or more, for identifying the sealand the car or other vehicle or package sealed.

A practical embodiment of my invention is represented in the accompanying drawings, in whichi Figure 1 is a view of the press as it appears when opened to receive the soft-metal rivet between its jaws. Fig. 2 is a longitudinal section of the same. Fig. 3 is a longitudinal section showing the parts closed in the position which they assume when the com pression or upsetting of the head of the rivet has been completed; and Fig. 4 is a View in detail of the die-holder, showing the die formed integral with its holder as distinguished from removable therefrom, as represented in the other figures. Y

The press comprises three main partsviz. the lower jaw, the upper jaw, and the dieholdertogether with the means for assembling themin the present instance rivets-1 and an antifriction-roller interposed between the upper jaw and the die-holder.

The lower jaw is denoted by a and is preferably extended to form a trough-like handle portion b for rendering it light and at the same time forming a seat between its side walls for the reception of the die-holder housed therein. The lower jaw a is provided with a depression 0, intended to receive the head of the soft-metal rivet to be operated upon, and so located as to coact with the die in the die-holder.

Access to the parts from the side, as well as the front, is obtained through a cut-away portion din the front of the sides of the jaw a, and the said sides are extended upwardly at their forward ends to receive the pivot c, by

which the upper jaw is secured between the sides of the lower jaw.

The upper jaw is denoted by f and is extended to forina handle portion g. it is, as before stated, pivoted between the sides-of the lower jaw at e, preferably by means of a rivet, to secure it permanently in place and carries at the lower portion of its head an antifriotion-roller h, which is intended to roll along the top of the die-holder in a direction toward the free or die end of the holder as the handle 9 is swung toward the handle I) to force the die-holder and die toward the rivetreceiving depression 0. l

The die-holder comprises a rigid bar 2', of suitable strong material, pivotally connected between the sides of the handle portions 7) of the lower jaw, preferably by means ofa rivetj; The pivotalpointof the bar 7; is located as far as practicable from the die to reduce the. curvature of the are in which its free end swings, so that it may approach the stationary jaw substantially parallel therewith.

The free end of the die-holder carries the die 70 in position directly above the depression 0 in the lower jaw. The die It may be removably connected to the end of the bar 1' by means of a set-screw Z or other suitable die-retaining means, or the die may be formed integral with the die-ho lder, as shown at 71:, Fig. 4.

The back of the die-holder is provided with a pronounced upward incline m, terminating in a horizontal portion n as the jaw g approaches the position to bring its roller h on center with respectto its pivotal con nection with the jaw a.

The die-holder is lifted away from the depression c in the lower jaw, carrying with it the upper jaw into position to receive a rivet by means of a spring 0, preferably a spiral spring, seated within a socketp in the lower jaw and bearing at its upper end against the under side of the die-holder i.

In operation the soft-metal rivet which is to form the seal having been inserted with its head in the depression 0 and its opposite end beneath the die 70 or 70 the handle 9 is forced toward the handle 6. In the early part a of the movement the roller hwill ride up the incline m and rapidly throw the free end of the die-holder,with the die thereon,toward the depression 0, rapidly upsetting the free end of the rivet, and as the compression or upsetting approaches its completion the roller h will ride along the level portion at in proximity to the incline m just as it approaches "has great power and capacity in proportion to the distance through which the handles swing away from'and toward each other.

'To prevent the handle g from being opened too far, its nose q is so shaped that it will impinge against the top of the die-holder when the jaw has reached it'sfull open position,

. and to prevent theroller h from being thrown completely onto or past center, so as to render the spring 0 of no avail in returning the jaw, a stop r is provided, in the present instance depending from the under side of the handle gin position to engage the .die-holder 71 near its pivotal connection with the jaw when the handles have been closed as far as desirable. The die k may be readily removed from its ,position' by loosening the set-screwl in the eventa removable die is used in the place of thestationary die referred to in Fig. 4.

It is obvious that changes might be resorted to in the form and arrangement of the several partswithout departingfrom the spirit and scope of my invention. 'Hence I do not wish to limit myself strictly to the structure herein set forth; but

What I claim is- 1. A seal-press comprising a die-jaw terminating in a handle portion, a rigid die-holder bar pivoted at one end to the handle portion of said die-jaw with its die-carrying end free to swing toward and away from the die in said jaw, and an operating-jaw pivoted to the diejaw and terminating in a handle portion, the said operating-jaw being provided with a cam arranged to travel along the swinging dieholder toward its die-carrying end as the compression progresses, substantially as set forth.

2. 'A seal-press comprising a die-jaw terminating in a handle portion, an operating-jaw pivoted to said die-jaw and terminating in a handle portion, a die-holder bar arranged to swing between said jaws, the said operatingjaw being provided with a cam arranged to engage the swinging die-holder, and the said swinging die-holder being provided with a pronounced incline with which the said cam engages during the initial compression move- ALBERT B. SCHOFIELD.

Witnesses:

FREDK. HAYNES, j GEORGE BARRY, Jr. 

